Why bloody killed herself?

she did not if you saw online it said everwhere she did not kill herself a boy did.Because it was prom night and boys were making girls drunk to have sex with them so a boy gave mary (bloody mary) a glass of wine mixed with beer so she did not want to drink it
so she threw the drink and the boy smacked her so she was dead he did not mean to kill the poor prom girl so he hid her in a trunk or a attic well she started to rot an began all blood because insects were eating her so she wants revenge.and how she is in a mirror is because she died by a mirror.so thats why bloody mary did not kill herself and how she became bloody mary.